六级练习2015.06.15
[audio]http://sound.yywz123.com/tingbbs/cet6/cet620150615.mp3[/audio]When Iragi troops blew up hundreds of Kuwaiti oil well at the end of Gulf War, scientists feared environmental disaster. Would black powder in the smoke from the fires circles the globe and block out the sun Many said: No way?; (1)___________________. But in America, airsampling balloons have detected high concentrations of particles similar to those collected in Kuwait. didn't catch fire. It has formed huge lakes in the Kuwaiti dersert. They trap insects and birds, (2)_______________________.
The only good news is that the oil lakes have not affected the underground water resources. So far, the oil has not been absorbed because of the hard sand just below the surface. Nothing, however, stops the oil from evaporating. (3)__________________. Officials are trying to organize a quick cleanup, but they are not sure how to do it. One possibillity is to burn the oil. Get those black-powder detectors ready.
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